Ir detectors

IR detectors used in anlytical engineering

1. IR DETECTORS SUBMITTED BY- MUHAMMED RAEES PC MUNAWAR CK NEDHEESH J BOSE

2. Moon Mineralogy Mapper

3. Near-IR Spectrometer (SIR-2)

4. IR DETECTORS

5. TYPES OF IR DETECTORS THERMAL THERMOCOUPLE-THERMOPILE BOLOMETER PNEUMATIC CELL PYROELECTRIC DETECTOR QUANTUM INTRINSIC PHOTOCONDUCTIVE PHOTO VOLTAIC EXTRINSIC

6. THERMAL DETECTORS DEPENDS ON HEATING EFFECT OF RADIATION

7. THERMOCOUPLE TYPE MOST WIDE SIGNAL ORIGINATES FROM A POTTENTIAL DIFFERENCE CAUSED BY HEATING A JUNCTION OF UNLIKE METALS ONE JUNCTION BETWEEN THE TWO METALS IS HEATED BY IR BEAM OTHER JUNCTION IS KEPT AT CONSTANT TEMP.

8. PNEUMATIC DETECTOR GOLAY-1947 MEASURES THE INTENSITY OF IR RADIATION BY FOLLOWING THE EXPANSION OF GAS UPON HEATING GOLAY CELL-A CHAMBER CONTAING XENON-LOW THERMAL CONDUCTIVITY GAS SEALED AT FRONT END BY BLACKENED RECIEVER REAR WALL- FLEXIBLE MEMBRANE WITH A MIRRORED SURFACE IR ENERGY FALLING ON RECIEVER WARMS UP GAS IN CHAMBER RISE IN TEMP OF GAS IN CHAMBER – A DISTORTION OF MIRROR DIAPHRAGM-WHICH REFLECTS THE LIGHT TO S PHOTO CELL

9. REFERENCE NPTEL  >> Chemical Engineering >> Modern Instrumental Methods of Analysis (Video) >> Infrared Spectroscopy - 1 https://www.ee.iitb.ac.in/~esgroup/es_mtech04_sem/es_sem04_paper_04307417.pdf